This is a permanent, ammonia-free hair color from the Goldwell Topchic Zero line, designed to deliver excellent color results while prioritizing hair health. Formulated without ammonia, it offers reliable grey coverage and uniform color penetration, achieving a natural brown result. It is engineered for professional performance and is suitable for clients seeking high-quality color solutions with a gentler formulation. Use this permanent hair color for comprehensive shade transformation and achieving lasting, vibrant color results.